OverviewThe TΩ Meter 5478 is a
digital multipurpose tester
intended for testing, analyzing,
inspecting and periodic
maintaining of high voltage
insulations. The main reasons
why insulations fail are due to
excessive heat, moisture, dirt,
vibrations and aging. To detect
such deteriorations in order to
initiate preventive maintenance
procedures it is necessary to
perform regular resistance
tests.

The TΩ Meter 5478 offers a
complete set of functions to
measure and detect effectively
all parts of current in an
insulation system. The
instrument can supply an output
power of 5 watts and a test
voltage of up to 5000 volts, and
therefore measure insulation
resistances up to 5TΩ.

The instrument is fully
automatic and requires no
measuring range adjustment. A
large dot matrix LCD displays
measuring values and test
progress at a glance. Built-in
memory allows the storage of up
to 1000 measuring results. Test
reports can be sent over a
RS-232 interface to an external
computer.